Standardize usage of virtual/override/final in media/

media/mojo/services/mojo_renderer_impl.h

Index: media/mojo/services/mojo_renderer_impl.h
diff --git a/media/mojo/services/mojo_renderer_impl.h b/media/mojo/services/mojo_renderer_impl.h
index 87d7b9548e33995d5b8acad571bbb1187a177163..f70bb99c99c979595153a86ad6cbcbc85172b979 100644
--- a/media/mojo/services/mojo_renderer_impl.h
+++ b/media/mojo/services/mojo_renderer_impl.h
@@ -37,30 +37,29 @@ class MojoRendererImpl : public Renderer, public mojo::MediaRendererClient {
   MojoRendererImpl(
       const scoped_refptr<base::SingleThreadTaskRunner>& task_runner,
       mojo::ServiceProvider* audio_renderer_provider);
-  virtual ~MojoRendererImpl();
+  ~MojoRendererImpl() override;
 
   // Renderer implementation.
-  virtual void Initialize(DemuxerStreamProvider* demuxer_stream_provider,
-                          const base::Closure& init_cb,
-                          const StatisticsCB& statistics_cb,
-                          const base::Closure& ended_cb,
-                          const PipelineStatusCB& error_cb,
-                          const BufferingStateCB& buffering_state_cb) override;
-  virtual void Flush(const base::Closure& flush_cb) override;
-  virtual void StartPlayingFrom(base::TimeDelta time) override;
-  virtual void SetPlaybackRate(float playback_rate) override;
-  virtual void SetVolume(float volume) override;
-  virtual base::TimeDelta GetMediaTime() override;
-  virtual bool HasAudio() override;
-  virtual bool HasVideo() override;
-  virtual void SetCdm(MediaKeys* cdm) override;
+  void Initialize(DemuxerStreamProvider* demuxer_stream_provider,
+                  const base::Closure& init_cb,
+                  const StatisticsCB& statistics_cb,
+                  const base::Closure& ended_cb,
+                  const PipelineStatusCB& error_cb,
+                  const BufferingStateCB& buffering_state_cb) override;
+  void Flush(const base::Closure& flush_cb) override;
+  void StartPlayingFrom(base::TimeDelta time) override;
+  void SetPlaybackRate(float playback_rate) override;
+  void SetVolume(float volume) override;
+  base::TimeDelta GetMediaTime() override;
+  bool HasAudio() override;
+  bool HasVideo() override;
+  void SetCdm(MediaKeys* cdm) override;
 
   // mojo::MediaRendererClient implementation.
-  virtual void OnTimeUpdate(int64_t time_usec,
-                            int64_t max_time_usec) override;
-  virtual void OnBufferingStateChange(mojo::BufferingState state) override;
-  virtual void OnEnded() override;
-  virtual void OnError() override;
+  void OnTimeUpdate(int64_t time_usec, int64_t max_time_usec) override;
+  void OnBufferingStateChange(mojo::BufferingState state) override;
+  void OnEnded() override;
+  void OnError() override;
 
  private:
   // Called when |remote_audio_renderer_| has finished initializing.